Fredeeick r



Patented Nov. 15, 1898.

n. BLUUNT. HYDROCABBON BURNING APPARATUS UR LAMP.

(Application filed Nov. 12, 1897.]

(No Model.)

1 I, I r /I .1

II/l, /1// INVENTOR:

WI TN E SSES:

THE NORRIS PETEBS cov. vuoroumofl WASHINGTON, n. c.

* UNITED STATES PATENT OFFICE.

FREDERICK R. BLOUNT, OF NEWV YORK, N. Y.

HYDROOARBON-BURNING APPARATUS OR LAMP.

SPECIFICATION forming part of Letters Patent No. 614,080, dated November 15, 1898.

Application filed November 12, 1897. Serial No. 658,318. (No model.)

To all whom it npay concern.-

Be it known that I, FREDERICK R. BLOUNT, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented-certain new and useful Improvements in Hydrocarbon-Burnin g Apparatus or Lamps, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to that class of hydrocarbon lamps or heaters by means of which a smokeless flame of high temperature is produced from a liquid or molten hydrocarbon through the. instrumentality of a primary burner or generator which vaporizes the hydrocarbon and a secondary burner removed from the primary burner, the vapor generated at the primary burner being mixed with air and conveyed to the secondary burner,where it is converted into a smokeless blue flame of high temperature.

The lamp embodying my present invention is or may be in its general construction substantially the same as the lamp shown by my application, Serial No. 658,317, filed simultaneously herewith, and is preferably of the centra'l-draft type; but instead of having a single annular wick, as does the lamp shown by my said application, my present lamp is provided with two annular wicks, one encircling the other, the central wick serving as an oilfeeder,whilethe outer wick serves both as an oil-feeder and as the burning-wick, or the wick on which the flame of the primary burner is concentrated. This is due to the fact that in a lamp of the class referred to, where the flame of the primary burner is properly smothered, so that just heat enough will be produced to generate the vapor to be consumed at the primary burner, but not heat enough to cause any considerable combustion of said vapor, the generating flame, even if a solid wick be employed, is confined to a narrow circle at the outer part of the wick,

while gas or vapor only is produced from the inner part of the wick by the heat of said circle of flame. Thus theouter part only'of the wick, where a solid wickis employed, or the outer wick, where two annular wicks, one surrounding the other, are employed, will be consumed to any appreciable extent, the inner part of the single solid wick or the inner the outflow of air somewhat. the air-tube a is an annular wick a which annular wick being unconsumed and serving, as stated, as a capillary conductor to feed the oil to the primary burner.

In the accompanying drawings, Figure l is a sectional view of a lamp embodying my in,- vention with the upper or secondary burner and the upper part of the tube forming the mixing-chamber broken away, and Fig. 2 is a vertical section of the upper part of the tube forming the mixing-chamber and of the upper or secondary burner.

A denotes the oil-reservoir of a lamp of the central-draft type and from the bottom of which rises an air-tube 0 which is open at the bottom of the said reservoir and which extends upward into or communicates with the mixing-chamber d, where the vapor produced at the primary burner is mingled with air on its way to the secondary burner, as will presently be more fully explained. The top of the said air-tube is preferably provided with a foraminous screen a to check Surrounding is to serve as an oil-feeder, and surrounding the said annular wick a and separated there from by a tube of, suitably supported from the bottom of the oil-reservoir A, is a second annular Wick a,which is preferably provided with a screw-actuated raising and lowering device or wire a, operated by a thumb screw or nut in a well-known manner.

The primary-burner tube a is supported in any suitable manner from the top of the oil= reservoir A and extends up into the combus tion-chamber B. Surrounding the wall of the combustion-chamber is a hood or sleeve 0, having a foot-plate c, resting on the wall of the combustion-chamber and which sleeve may be lifted when the lamp is to be lighted through the openings b in the wall 6 of the combustion chamber, and which hood or sleeve when in position as shown closes said openings. The lower part of the sleeve 0 is perforated for the admission of air adjacent to the wall of the combustion-chamber, and surrounding said hood or sleeve 0 is a second sleeve or ring 0 which is provided with perforations which may be brought into register with the perforations of the sleeve 0, and which sleeve or ring a may be turned by its handles 0 to close the holes or perforations in the sleeve 0 more or less to regulate the indraft of air to the mixing-chamber d. The air introduced in close proximity to the wall of the combustion-chamber becomes more or less heated on its way through the outer airchamber 0 and the inner air-chamber 0 the latter opening at its top into the mixing-chamber d. The air in the air-tube a on its way to the mixing-chamber d also becomes more or less heated by reason of the fact that the said air-tube is surrounded by the flame of the primary burner.

Above the combustion-chamber B is a flue G, which connects the said combustion-chamber with the mixing-chamber d and which is mainly surrounded by the inner air-chamber 0 Below the combustion-chamber B is an air-chamber b having a perforated or foraminous outer wall I), the top of said chamber 1) being formed by a diaphragm b provided with openings for the upward passage of air from the said air-chamber. Surmounting the said diaphragm b is an annular regulating and extinguishing shutter 12, provided with openings which may be brought into register with the openings in the said diaphragm and which is adapted to be turned by means of a handle I) to close the said openings more or less. When the lamp is first lighted, air will be freely admitted through the openings in the said shutter and diaphragm, and the said shutter will then be moved to close the said openings more or less, as may be required.

The tube D, within which is the mixingchamber (1, is preferably provided with a tapered or contracted upper part which is surmounted by the secondary burner c, which in the form of my invention herein shown consists of a sharply-tapered foraminous cone, this form of burner being found desirable for the double-wick lamp herein shown.

In the use of my improved lamp when the primary burner is lighted and the shutter 11 is turned to properly smother the flame thereof a dense gas or vapor heavily laden with carbon is generated at the said primary burner and passes upward from the combustionchamber B and through the fine 0 above said chamber to the mixing-chamber d, where it is mingled with air entering from the air-chamber c and the air-tube a. The gas or vapor thus mixed with air then passes upward to the secondary burner e, where, being lighted, it is converted into a smokeless blue flame of high temperature, which may be utilized for any desired purpose, but which in the form of my invention herein shown is intended to be used for heating an incandescing mantle for illuminating purposes.

I do not claim herein certain features of my improved lamp herein shown and also shown in my application, Serial No. 658,317, and which are therein claimed; but

What I claim, and desire to secure by Letters Patent, is

In a heating or lighting apparatus, the com bination with a primary or vapor-producing burner or generator comprising two closely adjacent annular Wicks one within the other, a combustion-chamber into which the wicks of said primary burner extend, a secondary burner removed from said primary burner, and a mixing-chamber above the said combustion-chamber in which the said primary burner is located, and in which mixing-chamber the vapor generated at said primary burner is mingled with air on its way to said secondary burner, of a central air-tube ex tending from the bottom of the oil-reservoir of the lamp upward and communicating at its top with said mixing-chamber.

In testimony whereof I atfix my signature in presence of two witnesses.

FREDERICK R. BLOUN".

Vv'itnesses:

HENRY CALVER, M. L. SLATER. 

